Breeding your horny grandma

One of the side effects of grandma’s new revitalization tablets is extreme horniness and increased sexual appetite so much so that step-grandma finds herself humping furniture and trying to get off anyway she can. One day when her step-grandson is over he cannot help but notice her new affection for furniture. She gets embarrassed and admits that it is a side effect of the revitalization tables. He tries to convince her that they are fake like everything on the Internet and gulps down several of them to prove it to her. Later that afternoon, while she is grinding on her pillow, he stops and looks at her ass admiringly and lustfully, and cannot help himself. He asks if she is as horny as he is, of course, and she says yes.